What do 4-Isopropylbenzylamine & N-Isopropylbenzylamine look like on Regent test results as wide a test group as possible.

[MoonBunn96]

I got someone dealing with low blood pressure. The man smokes speed daily, rips it from a dab rig. That should not be causing low blood pressure. Brief research led me to 4-Isopropylbenzylamine and N-Isopropyl benzylamine. They are commonly used as cuts/adulterants/alternatives for methamphetamine and will test red similar to amphetamines on a Marquese, so my quandary is this:

What does it look like on all the others and more specifically is there a regent that can be used to differentiate between methamphetamine and these copycat toxins?